The Endurance PEAK Wireless In-Ear Sport Headphones from JBL are designed to deliver your favorite workout music wirelessly via Bluetooth technology. It can do so in mono or stereo, so if you need to listen to your surroundings, you can use just one earpiece. Thanks to the IPX7 rating, you can work-out as hard as you’d like. They are resistant to sweat, rain, and even being submersed in up to 3.3′ of water. Features: 10mm Drivers, Built-In Rechargeable Battery, Up to 4 Hours of Playback, Charging Case for 24 Hours of Playback, Wireless Bluetooth 4.2 Technology, In-Ear Design with Flexible Earhooks, IPX7-Rated Water Resistance, Touch Controls for Music and Calls, Turns On When Worn / Off When Removed, Mono and Stereo Listening Modes.